| 摘要 |
Novel system and methodology for server protection by preventing the protected server from receiving packets supplied by a user and/or preventing the server from transmitting packets to the user. A server protection device has a user communication mechanism for controlling communication with the user and a server communication mechanism for controlling communication with the server. A user information extracting mechanism extracts predetermined information and removes external address information from user packets sent by the user for delivery to the server. A user information control mechanism checks the extracted predetermined information to allow acceptable information to pass to the server communication mechanism and to prevent unacceptable information from passing to the server communication mechanism. Internal packets produced by the protection device and containing the acceptable information are transferred by the server communication mechanism to the server.
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